I'm wanting to replace my FSA gossamer crankset on a Giant Defy Advanced 3, there's nothing wrong with it other than the color, it's the bare aluminum and everything else on the bike is black. I can pick up a black one cheap enough to justify the cosmetic change. Here's the dilemma, I'm fairly new to this first off, the auction states "Requires separate 108mm ISIS bottom bracket" and my bike states it has a "FSA Gossamer press fit bb" Will these two simply swap out? Also, they're both compact and 175mm. In addition, what specialty tools will I need to get to perform this operation? Thanks!